chore: upgrade ESLint to v10 with flat config

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Upgrade ESLint from 8.57.0 to 10.5.0. ESLint 10 removes support for the
legacy `.eslintrc` format entirely, so the configuration is migrated to the
new flat config (`eslint.config.mjs`).

Changes:
- Bump `eslint` 8.57.0 -> 10.5.0 and `eslint-plugin-jest` to 29.15.2.
- Replace the legacy `@typescript-eslint/eslint-plugin` + `@typescript-eslint/parser`
  pair with the `typescript-eslint` meta-package (8.62.0), which supports ESLint 10.
- Replace the deprecated `eslint-plugin-node` (unmaintained, broken on ESLint 9+)
  with its maintained fork `eslint-plugin-n` (18.1.0); the single rule in use,
  `node/no-extraneous-import`, becomes `n/no-extraneous-import`.
- Add `@eslint/js` (10.0.1) and `globals` (17.7.0), now required by flat config.
- Translate `.eslintrc.js` to `eslint.config.mjs` and `.eslintignore` to the flat
  config `ignores`, preserving all existing rules and the test-file overrides.
- Update the `lint`/`lint:fix` scripts to invoke `eslint` directly (flat config is
  auto-detected; the `--config ./.eslintrc.js` flag is removed).

`preserve-caught-error` (new in ESLint 10's recommended set) is disabled to keep
the previous lint behavior; adopting it requires an ES2022 target and is left as a
follow-up. Only dev/lint dependencies change, so runtime deps and the built
`dist/` output are unchanged.

Note: `.eslintrc.js` was previously auto-synced from actions/reusable-workflows.
Upstream has not yet published a flat config, so this migration intentionally
deviates from that auto-sync until upstream catches up.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

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This commit is contained in:

Bruno Borges

2026-06-22 17:44:16 -04:00

parent eab4b0854d

commit af5f874769

5 changed files with 693 additions and 785 deletions

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